From Kim Lofgren
As my great-grandparents were friends and whist partners with Thomas Edison and his wife, his “Success is 10 per cent inspiration and 90 per cent perspiration” was a well-worn family saying. You attributed it to Einstein in your editorial (9 August, p 5).
Edison was also a purveyor of the idea that 15-minute catnaps could substitute for a full night’s sleep – he was not a dreamer but a workaholic. This substantive difference between him and Einstein was illustrated in the article, “163 ways to lose your job” (9 August, p 46).
New York City, US
